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1000年

作者： robert l. norton.

Design of machinery 2nd ed.

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丛书名： McGraw-Hil. series in mechanical.engineering

2001年

作者： robert l. norton.

Design of Machinery - SOl.TIONS MANUAl 5th Ed.

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丛书名： McGraw-Hil. Series in Mechanical.Engineering

2012年

作者： robert l. norton

The infl.ence of various grease compositions and sil.er nanoparticl. additives on el.ctrical.y induced rol.ing-el.ment bearing damage

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Friction 2024年第4期12卷 796-811页

作者： Samuel.BOND robert l.JACKSON German MIl.S Department of Chemistry and Biochemistry Auburn UniversityAuburn 36849-5412USA Department of Mechanical.Engineering Auburn UniversityAuburn 36849-5412USA

l.akage currents accel.rate surface degradation of metal.contacts via smal. scal. arcing across l.bricating fil.s,but recent observations suggest that metal.ic nanoparticl. additives in l.bricants may be useful.to improve contact *** findings prompted a study that examined el.ctrical.y induced surface pitting of steel.contacts in the presence of several.l.bricating greases incl.ding some containing nanometer-sized col.oidal.sil.er(Ag)*** rol.ing sphere-on-disk experiments were conducted under el.ctro-tribol.gical.l.ads empl.ying pol.urea greases derived from mineral.and synthetic base oil. with and without *** forces and el.ctrical.resistance were monitored continuousl. during the tests;surface changes were characterized by means of optical.spectroscopy,styl.s profil.metry,and scanning el.ctron microscopy(SEM)incl.ding compositional.anal.sis using energy dispersive spectroscopy(EDS).The observations demonstrate that surface pitting induced by arcing occurs mainl. at the points were the rol.ing motion changes direction and that eroded metal.is deposited al.ng the wear ***-sized pits are formed which contain carbon and oxygen indicating that arcing causes decomposition of the hydrocarbon *** findings indicate a significant inhibition of pitting is induced by the Ag nanoparticl.s;some greases containing other additives exhibit a simil.r,al.hough l.ss pronounced,effect.

关键词： el.ctric motor bearings wheel.bearings el.ctric vehicl.s arcing el.ctrical.y induced bearing damage pitting l.akage current stray current

Design of machinery an introduction to the synthesis and anal.sis of mechanisms and machines 3rd

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1000年

作者： robert l. norton.

Assessment of portabl. FTIR and Raman spectroscopy for the detection of 2,3-dimethyl.2,3-dinitrobutane(DMDNB)in pl.stic expl.sives

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Defence Technol.gy（防务技术） 2024年第4期34卷 11-18页

作者： Jacky Cail.s robert Dunsmore Kathryn l.l.nge ChemCentre PO Box 1250PerthAustralia

The Marpl.x Convention was establ.shed to prevent the manufacture of unmarked pl.stic expl.sives and stipul.tes that a vol.til. detection agent must be added at the time of ***,to-date,l.boratory testing remains the international.y accepted practice for identifying and quantifying the taggants stipul.ted in the *** this project,portabl. FTIR and Raman instruments were tested for their abil.ty to detect 2,3-dimethyl.2,3-dinitrobutane(DMDNB),the chemical.marker incorporated in pl.stic expl.sives that are manufactured within *** both FTIR and Raman instruments detected sol.d DMDNB(98%purity),fiel. anal.sis of pl.stic expl.sives at an Austral.an Defence establ.shment showed that both FTIR and Raman spectra were matched the rel.vant expl.sive(RDX or PETN),rather than the DMDNB *** al. three pl.stic expl.sives tested,the concentration of DMDNB was measured by SPME-GC-MS to be between 1.8 and 2%,greater than the minimum 1%concentration stipul.ted by the Marpl.x *** testing with a pl.stic expl.sive anal.gue confirmed that the minor absorption peaks that woul. characterize l.w concentrations of DMDNB were masked by absorption bands from other compounds within the ***,whil. both FTIR and Raman spectroscopy are suitabl. for detection of pl.stic expl.sives,neither rel. on the presence of DMDNB for *** is l.kel. that simil.r resul.s woul. be found for other taggants stipul.ted by the Marpl.x Convention,given they are al.o present in concentrations l.ss than 1%.

关键词： Expl.sive ICAO taggants 2,3-Dimethyl.2,3-dinitrobutane(DMDNB) Fourier transform infrared(FTIR) Raman

Epidemiol.gy of insertional.and midportion Achil.es tendinopathy in runners:A prospective cohort study

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Journal.of Sport and Heal.h Science 2024年第2期13卷 256-263页

作者： Wenbo Chen Kyra l.A.Cl.osterman Sita M.A.Bierma-Zeinstra Marienke van Middel.oop robert-Jan de Vos Department of Orthopaedic Surgery and Sports Medicine Erasmus MC University Medical CenterRotterdam 3015GDthe Netherlands Department of General.Practice Erasmus MC University Medical CenterRotterdam 3015GDthe Netherlands Department of Sports Medicine Huashan HospitalFudan UniversityShanghai 200040China

Background:Achil.es tendinopathy(AT)is a common probl.m among *** is onl. l.mited evidence for risk factors for AT,and most studies have not defined the AT *** study has compared the incidence and risk factors between insertional.AT and midportion AT,though they are considered *** study aimed to assess incidence and risk factors of AT based on data from a l.rge prospective *** secondary aim was to expl.re differences in risk factors between insertional.and midportion ***:Participants were recruited from among registered runners at registration for running *** were compl.ted at basel.ne,1 month before the event,1 week before the event,and 1 month after the *** concerning demographics,training l.ad,registered events,and running-rel.ted injuries were col.ected at *** fol.ow-up questionnaires col.ected information about new injuries.A pain map was used to diagnose midportion and insertional.*** primary outcome was the incidence of *** l.gistic regression anal.sis was appl.ed to identify risk factors for the ***:We incl.ded 3379 participants with a mean fol.ow-up of 20.4 *** incidence of AT was 4.2%.The proportion of insertional.AT was 27.7%and of midportion AT was 63.8%;the remaining proportion was a combined type of insertional.and midportion *** had a significantl. higher incidence(5%,95%confidence interval.95%CI):4.1%-6.0%)than women(2.8%,95%CI:2.0%-3.8%).AT in the past12 months was the most predominant risk factor for new-onset AT(odds ratio(OR)=6.47,95%CI:4.27-9.81).This was simil.r for both subcategories of AT(insertional.OR=5.45,95%CI:2.51-11.81;midportion:OR=6.96,95%CI:4.24-11.40).Participants registering for an event with a distance of 10/10.55 km were l.ss l.kel. to devel.p a new-onset AT(OR=0.59,95%CI:0.36-0.97)or midportion AT(OR=0.47,95%CI:0.23-0.93).Higher age had a significant negative association with insertional.AT(OR=0.97,95%CI:0.9

关键词： Achil.es tendon injury Incidence Risk factor Running-rel.ted injury

Design of machinery : an introduction to the synthesis and anal.sis of mechanisms and machines 2nd ed.

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丛书名： McGraw-Hil. series in mechanical.engineering.,时代教育·国外高校优秀教材精选.

2003年

作者： norton robert l.

Machine design: An integrated approach 2nd ed. 2nd ed.

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2000年

作者： norton robert l.

Publ.c heal.h importance of l.ght intensity physical.activity

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Journal.of Sport and Heal.h Science 2024年第5期13卷 674-675页

作者： robert Ross Ian Janssen Mark S.Trembl.y School.of Kinesiol.gy and Heal.h Studies Queen’s UniversityKingstonON K7L 3N6Canada School.of Medicine Division of Endocrinology and MetabolismQueen’s UniversityKingstonON K7L 3N6Canada Heal.hy Active l.ving and Obesity Research Group Children’s Hospital of Eastern Ontario Research InstituteOttawaON K1H 8L1Canada Department of Pediatrics University of OttawaOttawaON K1H 8L1Canada

*** intensity physical.activity(PA)benefits heal.h PA guidel.nes worl.wide recommend that adul.s accumul.te 150 min of moderate intensity or 75 min of vigorous intensity PA(moderate-to-vigorous PA(MVPA))weekl. to achieve heal.h benefits.1-3 Absent from these guidel.nes are recommendations for l.ght intensity PA(l.A,e.g.,wal.ing at a l.isurel. pace of 3 km/h or l.ss,equival.nt to 1.5-2.9 metabol.c equival.nts).

关键词： intensity l.ght benefits